| 发明名称 |
Eyepiece lens with image located in space between first and second lens units |
| 摘要 |
An eyepiece lens is disclosed, in which the total number of constituent lenses is reduced but good optical performance is obtained by setting forth proper rules of design for optical parameters.
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| 申请公布号 |
US5969873(A) |
申请公布日期 |
1999.10.19 |
| 申请号 |
US19970000881 |
申请日期 |
1997.12.30 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SUGAWARA, SABURO |
| 分类号 |
G02B25/00;(IPC1-7):G02B25/00 |
主分类号 |
G02B25/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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